Service Catalog - ProductStack, vpc lookup.

[hantzzy]

When implementating of a productStack for servicecatalog that creates a new VPC or resource, it works fine here

But whenever I try to discover existing resources such as a vpc, I run into an issue
vpc = ec2.Vpc.from_lookup(self, "VPC", vpc_id=vpcid, is_default=False)

I get the following error:
Cannot retrieve value from context provider vpc-provider since account/region are not specified at the stack level.

It's unclear to me how I can pass the account / region to the product stack. The parent service catalog stack has the account and region environment set.